Under the background of dual carbon policy as well as energy conservation, blanks with variable thicknesses (BVTs) which act as structural components have drawn extensive attention due to their excellent strength and formability and reasonable load-bearing distribution characteristics, particularly in the field of automotive manufacturing. With these advantages, the manufacturing technologies of these plates using more efficient rolling methods have thus emerged. This article summarizes four methods and their characteristics for manufacturing plates with variable thicknesses based on rolling technology. In addition, a review is conducted on the latest research progress of the metal flow and rolling theories of existing plates with different thicknesses in the longitudinal and transverse direction.

Thermodynamic simulations of the H₂S removal from blast furnace gas by metal oxides were conducted to select a suitable metal desulfurizer. Notably, the Mn oxides demonstrated themselves as the optimal H₂S removal agents. They are characterized by the absence of radioactive pollution, high cost-effectiveness, high sulfur fixation potential, and non-reactivity with CO₂, CO, and CH₄. Through a comprehensive comparison of Mn oxides, the sulfur fixation potential and sulfur capacity were elucidated as follows: Mn₃O₄ > Mn₂O₃ > MnO₂ > MnO. The higher-valence manganese oxides were shown to have stronger oxidation ability, larger sulfur capacity, and the advantage of producing elemental sulfur with high utilization value during the reaction. After selecting Mn oxides as the optimal H₂S removal agents, an equilibrium component analysis of the regeneration process of the sulfided MnS was carried out. The results indicate that an oxygen amount that is 1.5 times that of MnS is the optimal dosage, and such an amount can oxidize all of the MnS at a relatively low temperature. Conversely, a diluted oxygen concentration can further reduce the temperature of the regeneration process, preventing the sintering of the regenerated desulfurizer and thus maintaining its reusability. This research provides a sufficient theoretical basis for the use of Mn oxides as active components of desulfurizers to remove H₂S from blast furnace gas and for the regeneration of MnS after desulfurization.

Particle adsorbents have gained significant traction in flue gas desulfurization applications, primarily attributed to their high structural homogeneity and large specific surface area. To address the multifaceted requirements of industrial sectors regarding the structural configurations and physicochemical properties of particle adsorbents while promoting sustainable manufacturing practices, this study systematically evaluates and critically appraises contemporary advancements in particle desulfurizing agent technologies. The synthesis of these findings establishes a theoretical framework to facilitate technological innovation and industrial progress within the particle desulfurizer domain. The research systems of particle adsorbents, encompassing active components, inert carriers, preparation methodologies, and gas–solid reaction models, were comprehensively reviewed. The advantages and current limitations of these systems were then systematically summarized. Finally, the fundamental principles and research trajectories in the application fields of distinct particle adsorbent research systems were elucidated. An analysis of the developmental trends indicated that enhancing the utilization efficiency of active components and improving the cyclic stability of adsorbents remained critical engineering challenges. It is posited that the pursuit of high reaction activity, thermal stability, mechanical strength, and superior anti-aggregation/sintering performance constitutes key directions for the advancement of particle adsorbents in China’s flue gas desulfurization industry.